Specimen Requirements

Container/Tube:

Preferred: Gold-top serum gel tube or plain, red-top tube

Acceptable: Green-top (lithium heparin) tube or lavender-top (EDTA) tube 

Minimum Volume: 6 uL and dead space

Stability: Store samples at 2 to 8°C for 14 days.  20-25°C up to 7 days. Freeze samples, devoid of red blood cells, at or below -20°C for up to 3 months.  Samples can be frozen up to 3 times.

Note: Thawed samples, samples containing precipates, and samples for repeat measurements must be carefully centrifuged before performing the assay.